A Small Brazilian Portuguese Speech Corpus for Speaker Recognition Study

Alberto Yoshihiro Nakano; Hélio Rodrigues da Silva; Juliano Rodrigues Dourado; Felipe Walter Dafico Pfrimer

doi:10.5433/1679-0375.2024.v45.50518

A Small Brazilian Portuguese Speech Corpus for Speaker Recognition Study

Authors

Alberto Yoshihiro Nakano Universidade Tecnológica Federal do Paraná https://orcid.org/0000-0002-3757-1427
Hélio Rodrigues da Silva Universidade Tecnológica Federal do Paraná https://orcid.org/0009-0009-4864-1337
Juliano Rodrigues Dourado Universidade Tecnológica Federal do Paraná https://orcid.org/0009-0008-2459-4751
Felipe Walter Dafico Pfrimer Universidade Tecnológica Federal do Paraná https://orcid.org/0000-0002-0586-1585

DOI:

https://doi.org/10.5433/1679-0375.2024.v45.50518

Keywords:

Brazilian Portuguese speech corpus, GMM, MFCC, Speaker recognition

Abstract

A small Brazilian speech corpus was created for educational purposes to study a state-of-the-art speaker recognition system. The system uses the Gaussian Mixture Model (GMM) as a statistical model for speakers and employs the Mel-frequency cepstral coefficients (MFCC) as acoustic features. The results using clean and noisy speech are compatible with the expected results, showing that the bigger the mismatch between training and test conditions, the worse the results. The results also improve with the increase in the utterance length. Finally, the obtained results can be used as baselines to compare with other speaker statistical models created with different acoustic features in different acoustic conditions.

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Author Biographies

Alberto Yoshihiro Nakano, Universidade Tecnológica Federal do Paraná

Alberto Yoshihiro Nakano is an Associate Professor at the Federal University of Technology - Paraná, Toledo campus. He received his Master’s Degree from the University of São Paulo, Brazil (2005) and his Dr. Eng. Degree from the Toyohashi University of Technology, Japan (2010).

Hélio Rodrigues da Silva, Universidade Tecnológica Federal do Paraná

Hélio Rodrigues da Silva received his Bachelor's Degree in Electronic Engineering (2018) and his Master's Degree (2022) from the Federal University of Technology - Paraná.

Juliano Rodrigues Dourado, Universidade Tecnológica Federal do Paraná

Juliano Rodrigues Dourado received his Bachelor's Degree in Electronic Engineering (2018) from the Federal University of Technology - Paraná.

Felipe Walter Dafico Pfrimer, Universidade Tecnológica Federal do Paraná

Felipe Walter Dafico Pfrimer is an Associate Professor at the Federal University of Technology - Paraná, Toledo campus. He received his Master's Degree in 2009 and his Dr. Eng. Degree in 2013, both from the University of Campinas, Brazil.

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